225161177 has 2 divisors, whose sum is σ = 225161178. Its totient is φ = 225161176.

The previous prime is 225161173. The next prime is 225161179. The reversal of 225161177 is 771161522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134073241 + 91087936 = 11579^2 + 9544^2 .

It is a cyclic number.

It is not a de Polignac number, because 225161177 - 2² = 225161173 is a prime.

Together with 225161179, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225161173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112580588 + 112580589.

It is an arithmetic number, because the mean of its divisors is an integer number (112580589).

Almost surely, 2^225161177 is an apocalyptic number.

It is an amenable number.

225161177 is a deficient number, since it is larger than the sum of its proper divisors (1).

225161177 is an equidigital number, since it uses as much as digits as its factorization.

225161177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 32.

The square root of 225161177 is about 15005.3716048620. The cubic root of 225161177 is about 608.3653961625.

The spelling of 225161177 in words is "two hundred twenty-five million, one hundred sixty-one thousand, one hundred seventy-seven".